10Pcs 4/5/6/8mm Size Head Ceramic Drill Bit Four Serrated Edges Dry Drill Bit for Porcelain Tile Marble Concrete Wall Drilling

10Pcs Four Serrated Edges Dry Drill Bit ✨ Core Product Features✅ Four-Edge Serrated Eccentric Carbide TipUnique four-sided serrated cross alloy tip with eccentric offset design. It self-centers automatically to prevent wandering, cuts quickly and cleanly without cracking fragile materials like ceramic tiles, glass and marble. The serrated edges grind away hard concrete and brick efficiently.✅ Premium Titanium Coated Alloy BodyWhole drill body adopts wear-resistant carbide alloy with golden titanium anti-rust coating. Excellent heat dissipation and high hardness, anti-abrasion, anti-overheating, extending service life under continuous heavy drilling work. Deep spiral flutes rapidly discharge dust and debris to avoid bit jamming.✅ Standard Quick-Change Hex ShankUniversal 1/4 hexagonal shank fits all cordless drills, impact drivers and electric screwdrivers. The stepped anti-slip hex design maximizes torque transmission, effectively eliminating slipping during high-load drilling.✅ Multi-Material Universal Drilling PerformanceOne drill handles multiple construction materials: ceramic tile, glass, jade, marble, wall brick, concrete, solid wood, aluminum alloy, plastic, PVC board, perfect for home renovation, bathroom tiling and DIY craft projects.✅ Separate 10PCS Bulk Packaging by Single SizeFour independent size options to match different aperture demands:4mm 10pcs pack5mm 10pcs pack6mm 10pcs pack8mm 10pcs packSuitable for bulk purchase by maintenance workers, hardware stores and decoration teams.📋 Product SpecificationsProduct Name: Four-Edge Serrated Eccentric Carbide Drill BitsRaw Material: Hardened Carbide AlloySurface Coating: Anti-corrosion Titanium Gold CoatingShank Type: 1/4" Quick Change Hexagon ShankAvailable Drill Diameters: 4mm / 5mm / 6mm / 8mmSingle Pack Quantity: 10 Pieces per sizeApplicable Materials: Tile, glass, ceramic, concrete, brick, wood, aluminum alloy, plastic🎁 Package List10 × Four-edge serrated eccentric drill bits (uniform single diameter per pack)⚠️ Warm RemindersMinor color difference between real goods and listing images may appear due to monitor brightness and shooting lighting conditions.Slight dimensional tolerance is normal from manual measurement, kindly understand.When drilling glass, ceramic tile and other fragile materials, add water for cooling to avoid cracking workpieces.Do not apply excessive sudden pressure during drilling to prevent tip breakage.💡 Why Choose Our Drill BitsGreat for home renovators, tilers, repairmen and DIY enthusiasts. Sharp four-edge serrated design delivers faster drilling, less chipping on tile and stone. The durable titanium coating ensures long service life for frequent renovation jobs. Bulk 10-pack design saves your cost for daily repair work.